CN201429648Y - Single-phase electric meter adopting electric carrier wave technology - Google Patents
Single-phase electric meter adopting electric carrier wave technology Download PDFInfo
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- CN201429648Y CN201429648Y CN2009200622790U CN200920062279U CN201429648Y CN 201429648 Y CN201429648 Y CN 201429648Y CN 2009200622790 U CN2009200622790 U CN 2009200622790U CN 200920062279 U CN200920062279 U CN 200920062279U CN 201429648 Y CN201429648 Y CN 201429648Y
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Abstract
The utility model relates to a single-phase electric meter adopting the electric carrier wave technology, which comprises a singlechip circuit, and a metering module, a load control module, a key input module, a display module, a memory module and a communication interface module which are connected with the main control module, wherein the memory module comprises at least two independent memorieswhich are used for storing the same data and capable of verifying data with each other, the metering module comprises a voltage and current sampling circuit and a special metering integrated chip which are connected with a power supply circuit in turn, and the communication interface comprises an RS485 communication interface, and an infrared communication interface and an electric carrier wave communication circuit. The utility model is highly integrated, has little parts, is almost free from the adjustable components, reduces the probability of failure of the component, improves the averagenon-failure working time of the meter, and also adopts the multiple data backup technology, so data are stored in different memories to verify with each other, thereby ensuring the absolute safety ofthe data and avoiding the loss of the data.
Description
Technical field
The utility model relates to the electric energy metrical technical field, specifically is meant a kind of electronic type of using the modern electric ZAP, single-phase electric energy gauging table.
Background technology
Power supply department measures each user power utilization amount by electric energy meter.The mechanical type ammeter of Shi Yonging needs manually to check meter to the doorstep the earliest, and the personnel of power department and handling cost are all very big.Along with the development of technology, can utilize technology such as power line carrier to realize that remote meter reading or pre-paying kilowatt-hour meter solve this problem now.In fact, the simple ammeter of function can not satisfy modern society people's high-end consumption demand already in the past, and being electric administrative department or consumer all has higher requirement to functional diversities, job stability and the operability of ammeter, precision etc.
The utility model content
Problem to be solved in the utility model provides a kind of single phase power supply circuit that is applied to, and adopts modern communications technology, stable work in work, reliable electric energy meter.
According to the above problem that needs solution, technical solution adopted in the utility model is: a kind of single-phase ammeter of power application ZAP, comprise single chip circuit and the metering module that is connected with single chip circuit, load control module, keyboard input module, display module, memory module, communication interface module, also comprise being connected the precision signal output module that is used for accuracy test with single chip circuit; Described memory module comprises that at least two independently are used to store the identical data storer of checking data mutually.
Described metering module comprises voltage and the current sampling circuit that is connected with supply line, and described voltage and current sampling circuit send sampled signal to metering special integrated chip ADE7755, and then send single chip circuit to.
Described communication interface module comprises RS485 communication interface, infrared communication interface and power carrier communication circuit; Wherein, the RS485 communication interface adopts technical grade RS485 chip and is furnished with holding circuit.
The single-phase ammeter of described power application ZAP also at least also comprises the clock module of two accuracy classes, and described clock module is connected with single chip circuit.
The single-phase ammeter of power application ZAP also comprises and the direct-connected power transfer module of single phase power supply circuit, this module and reserve battery module all be used to coordinate the two work and be connected for other functional circuit module directly provides the power management module of working power.
Compared with prior art, the beneficial effects of the utility model are:
1) the utility model height is integrated, and the initial error of measured values such as metering, clock all adopts the software adjustment, and whole list cell spare is few and do not have adjustable device, has reduced the failure of elements probability, has improved the mean time between failures of ammeter;
2) adopted the multiple data redundancy technique, data are stored in different storeies, examine mutually, thereby have guaranteed being perfectly safe of data;
3) have the various communication interfaces circuit, support remote meter reading, data acquisition is convenient, flexible operation;
4) the RS485 communication interface is provided with holding circuit, and adopts software to cooperate, make this module have superpower tolerance, guarantee that communication performance is reliable and stable high pressure, static.
5) have the above running of two-stage clock, when high precision clock lost efficacy, automatically switch to low precision clock, guarantee the validity of time;
6) power supply highly reliable, wide operating range designs, and guarantees that ammeter can operate as normal under rugged surroundings.
Description of drawings
Fig. 1 is that the utility model principle is formed schematic block diagram; Fig. 2 is a RS485 communication interface holding circuit principle schematic; Fig. 3 is described metering module embodiment circuit theory synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As Fig. 1, the utility model comprises single chip circuit and the metering module that is connected with single chip circuit, load control module, keyboard input module, display module, memory module, communication module, is used for the precision signal output module of accuracy test.Wherein, be provided with infrared communication interface, power carrier communication interface and RS485 communication interface in the communication module, the infrared communication interface is mainly used in staff's on-site data gathering, the power carrier communication interface is used for remote meter reading, and the RS485 communication interface promptly can be used for on-site data gathering also can support remote centralized meter-reading system.The electric energy meter parameter also can be provided with by infrared interface or RS485 interface, and described ammeter correctly is set after the parameter will be tested and monitor the user power utilization situation by the demand that the user is provided with.
During enforcement, metering module is gathered single-phase voltage and electric current respectively by the voltage transformer (VT) summation current transformer, and sends the metering special integrated chip to, and by sending single-chip microcomputer to after this computation chip processing the data that collect is put in order, calculated and store.As shown in Figure 3, be described metering module embodiment circuit theory synoptic diagram, sampling has high-precision computation chip among the figure, and model is ADE7755.
Described memory module adopts two Stand Alone Memory at least, in the technical solution of the utility model data has been adopted the multiple duplication technology, and identical data is stored in different storeies, is used for examining mutually, avoids error in data or loss, guarantees data security.Described storer can adopt storage speed piece, electric erasing type read-only FLASH storer able to programme, and this storer can keep canned data for a long time under situation about not powering up.
Described RS485 communication interface adopts technical grade RS485 chip and is furnished with special holding circuit.As Fig. 2; described holding circuit comprises that being connected to the RS485 communication interface sends (A) and receive thermistor PT1, the PT2 that (B) holds; be parallel with voltage dependent resistor (VDR) R43, Transient Suppression Diode M1 between thermistor PT1, the PT2 other end; noise suppression magnetic bead R41, R42 are connected to voltage dependent resistor (VDR) R43 two ends, and noise suppression magnetic bead R41, the R42 other end are as signal output part.
When the outside has high energy superpotential undesired signal to be added on A, B two ends; voltage dependent resistor (VDR) R43 reacts rapidly; produce a transient high-current; increasing sharply of electric current makes thermistor PT1, PT2 quick acting in the loop; be that PT1, PT2 self pressure drop increases sharply; so just can reduce the high pressure that drops on the voltage dependent resistor (VDR) R43, avoid communication interface to damage, play a protective role.And for low-energy disturbing pulse, after cutting down for the first time by voltage dependent resistor (VDR) R43, eliminate by Transient Suppression Diode M1, noise suppression magnetic bead R41, R42 again, so just guarantee that communication interface can still can normal communication under the coupled interference of 3.5KV.
The utility model has two-way RS485 communication interface simultaneously, during enforcement, adopts the multitask communication mechanism of similar Windows, makes two communication interfaces can carry out communication without interfering with each other.
The above clock running of the utility model configuration two-stage or two-stage when high precision clock lost efficacy, automatically switches to low precision clock, guarantees the validity of time, promptly guarantees the stability of ammeter work.
The utility model almost has at present existing high-end metering ammeter repertoire, for example: electric quantity metering, line loss metering, loss on transmission metering, variable data metering or the like; Metering and write down current and go up some months total, point, peak, put down, paddy and forward and reverse active energy and requirement; Writing down 12 months meritorious total and divide rate clearing electric energy, the forward active energy is freezed in the time zone, freezes zero point and freezes forward and reverse immediately and data such as branch rate active energy; Event recording function mainly comprises decompression record, defluidization record, rate of qualified voltage etc.The single-phase active energy metering of full-electronic, just, oppositely electric weight all is being added to current electric quantity.
The utility model further comprises voltage monitoring and watchdog circuit, and this circuit links to each other with single chip circuit, guarantees that program run is stable; Software program is guaranteed the order correct execution by fault-tolerant technique simultaneously, avoids producing misoperation.
The not specifically described functional module in this part all adopts ripe circuit module of the prior art, therefore repeats no more.
Claims (7)
1, the single-phase ammeter of power application ZAP, comprise single chip circuit and the metering module that is connected with single chip circuit, load control module, keyboard input module, display module, memory module, communication interface module, it is characterized in that: described memory module comprises that at least two independently are used to store the identical data storer of checking data mutually.
2, the single-phase ammeter of power application ZAP according to claim 1, it is characterized in that: described metering module comprises voltage and the current sampling circuit that is connected with supply line, described voltage and current sampling circuit send sampled signal to metering special integrated chip ADE7755, and then send single chip circuit to.
3, the single-phase ammeter of power application ZAP according to claim 2, it is characterized in that: described communication interface module comprises RS485 communication interface, infrared communication interface and power carrier communication circuit.
4, the single-phase ammeter of power application ZAP according to claim 3 is characterized in that: described RS485 communication interface adopts technical grade RS485 chip and is furnished with holding circuit.
5, the single-phase ammeter of power application ZAP according to claim 4; it is characterized in that: described holding circuit comprises thermistor PT1, the PT2 that is connected to transmission of RS485 communication interface and receiving end; be parallel with voltage dependent resistor (VDR) R43, Transient Suppression Diode M1 between thermistor PT1, the PT2 other end; noise suppression magnetic bead R41, R42 are connected to voltage dependent resistor (VDR) R43 two ends, and noise suppression magnetic bead R41, the R42 other end are as signal output part.
6, the single-phase ammeter of power application ZAP according to claim 5 is characterized in that: comprise the clock module of two accuracy classes at least, described clock module is connected with single chip circuit.
7, according to the single-phase ammeter of each described power application ZAP in the claim 1～6, it is characterized in that: also comprise and the direct-connected power transfer module of single phase power supply circuit, this module and reserve battery module all be used to coordinate the two work and be connected for other functional circuit module directly provides the power management module of working power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200622790U CN201429648Y (en) | 2009-08-11 | 2009-08-11 | Single-phase electric meter adopting electric carrier wave technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200622790U CN201429648Y (en) | 2009-08-11 | 2009-08-11 | Single-phase electric meter adopting electric carrier wave technology |
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| Publication Number | Publication Date |
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| CN201429648Y true CN201429648Y (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200622790U Expired - Fee Related CN201429648Y (en) | 2009-08-11 | 2009-08-11 | Single-phase electric meter adopting electric carrier wave technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200544A (en) * | 2010-12-31 | 2011-09-28 | 中国电力科学研究院 | Method for accumulating aggregate capacitances of smart meter capable of realizing bidirectional metering |
| CN102419386A (en) * | 2010-09-27 | 2012-04-18 | 宁夏隆基宁光仪表有限公司 | 0.5-grade electronic type single-phase watt-hour meter |
| CN102435838A (en) * | 2011-10-18 | 2012-05-02 | 中国电力科学研究院 | Basic electric quantity type energy-efficiency data collecting terminal |
| RU2775865C1 (en) * | 2021-09-30 | 2022-07-11 | Общество с ограниченной ответственностью "МИРТЕК" | Method for monitoring the performance of an active electric energy meter |
-
2009
- 2009-08-11 CN CN2009200622790U patent/CN201429648Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419386A (en) * | 2010-09-27 | 2012-04-18 | 宁夏隆基宁光仪表有限公司 | 0.5-grade electronic type single-phase watt-hour meter |
| CN102200544A (en) * | 2010-12-31 | 2011-09-28 | 中国电力科学研究院 | Method for accumulating aggregate capacitances of smart meter capable of realizing bidirectional metering |
| CN102200544B (en) * | 2010-12-31 | 2016-01-20 | 中国电力科学研究院 | Total electricity accumulation method of the intelligent electric meter of bidirectional measuring can be realized |
| CN102435838A (en) * | 2011-10-18 | 2012-05-02 | 中国电力科学研究院 | Basic electric quantity type energy-efficiency data collecting terminal |
| RU2775865C1 (en) * | 2021-09-30 | 2022-07-11 | Общество с ограниченной ответственностью "МИРТЕК" | Method for monitoring the performance of an active electric energy meter |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20110811 |